Calorimetric wattmeter for testing microwave ovens



FIG. 1 is a top front right perspective view of a calorimetric wattmeter for testing microwave ovens showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for a calorimetric wattmeter for testing microwave ovens, as shown. 